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I’m having an issue with my printer leaving streaks/lines on printed paper. The streaks appear across the page and affect print quality. I’ve already tried basic cleaning, but the problem still happens.
What could be causing this, and what steps should I try to fix it?
Laser printer “stripes” or lines on printed pages are usually caused by toner, drum, or cleaning issues. You can fix it with these steps:
Remove the toner cartridge and gently shake it side to side to redistribute toner
Check if the toner is low or nearly empty and replace it if needed
Clean the drum unit (or replace it if it’s worn out)
Run the printer’s built-in cleaning cycle (many printers have this option in settings)
Clean the inside of the printer (especially toner path and rollers) using a dry lint-free cloth
Check for paper dust or debris inside the printer
Try a test print after each step to identify improvement
Common causes:
Faulty or aging drum unit
Low-quality or nearly empty toner cartridge
Dirty laser scanner window
Paper dust buildup inside the printer
If the stripes stay consistent in the same position on every page, it usually means the drum or toner cartridge needs replacement.